I’m trying to figure out the best window orientation for keeping my little 1970s ranch warmer in winter without roasting us in summer. I know south-facing windows are supposed to be the gold standard for “free heat” when the sun’s low, but I’ve also read that big east or west windows can make mornings or afternoons super toasty (and sometimes a bit much).
I’m in Colorado, so we get cold but sunny winters, and honestly, I hate fiddling with curtains all day. My neighbor swears by her huge east-facing living room window, says it warms up fast in the morning, but then cools off before the house gets stuffy. But I’ve always heard south-facing is more balanced throughout the day.
If you had to choose—would you go for bigger south windows or try to catch more of that morning/evening sun from east/west? Anyone regret their choice? Curious what actually works in real life, not just on those energy diagrams…
I’ve got a 1960s ranch here in Denver, and honestly, the big south-facing windows have been the most consistent for winter warmth. The sun tracks across them all day, so you get steady heat—not just a blast in the morning or evening. That said, in summer, it can get a little too warm unless you’ve got decent overhangs or shades. Have you thought about how much direct sun your east/west sides actually get, or are there trees or other houses blocking some of it? That made a difference for us.
The sun tracks across them all day, so you get steady heat—not just a blast in the morning or evening.
That’s interesting—my place is more shaded on the south side, so I never got that “all day” warmth you’re talking about. Do you notice any cold spots or drafts near those big windows at night, though? I always figured the bigger the window, the bigger the heat loss once the sun’s gone, even if you get solid gain during the day.
Also, how do you handle the summer overheating? I’ve got overhangs, but they’re not quite deep enough, and I’m debating if it’s worth adding exterior shades. Or maybe you just live with it and crank the fans. Curious if you’ve tried anything like those insulating curtains or window films for winter—do they actually make a difference, or is it just marketing hype?
And about the east/west sides, do you get any weird hot/cold swings there, or is it mostly evened out by the rest of the house? My old place had a west-facing living room, and it was a sauna in late afternoon, even in winter.